partio: add zlib dependency

Author: cho-m

Formula/p/partio.rb

@@ -20,6 +20,8 @@ class Partio < Formula
   depends_on "doxygen" => :build
   depends_on "[email protected]"
 
+  uses_from_macos "zlib"
+
   on_linux do
     depends_on "freeglut"
     depends_on "mesa"